West Brompton (WBP) to London Stansted Airport (STN) train with London Overground

London Overground is a train company based in the United Kingdom. It operates a network of suburban rail services in and around Greater London. The services run from early morning until late at night, with some lines running 24 hours a day. The trains come in a variety of types, including the Class 378 Capitalstar, Class 172 Turbostar, Class 315, Class 317, Class 508 and Class 700 Desiro City. London Overground offers a range of ticket types, including single, return, off-peak and super off-peak tickets. Onboard facilities include air-conditioning, Wi-Fi, power sockets and CCTV. The most popular routes for London Overground are from Euston to Watford Junction, from Liverpool Street to Enfield Town, and from Clapham Junction to Stratford.

Greater Anglia is a train company based in the United Kingdom. It operates a wide range of services, from commuter trains to intercity services. The commuter trains run at regular intervals throughout the day, while the intercity services run at peak times. The train types include the InterCity 125, InterCity 225, Class 90, Class 91, Class 360 and Class 379. The ticket types available are Standard, First Class and Advance. Onboard facilities include Wi-Fi, power sockets, air conditioning and refreshment trolleys. The most popular routes for Greater Anglia are London Liverpool Street to Norwich, London Liverpool Street to Cambridge and London Liverpool Street to Ipswich.